Key Differences
- •Gemini 3 Pro has a larger context window (1M vs 400k tokens)
- •Gemini 3 Pro has more recent training data (Jan 2025 vs Sep 2024)
- •GPT-5.1 Codex mini is more affordable for input ($0.25 vs $2.00/1M tokens)
- •GPT-5.1 Codex mini is more affordable for output ($2.00 vs $12.00/1M tokens)
- •Gemini 3 Pro is newer (released Nov 2025)
1M tokens
Context
400k tokens
Jan 2025
Knowledge
Sep 2024
Nov 2025
Released
Nov 2025
$2.00/1M
Input
$0.25/1M
$12.00/1M
Output
$2.00/1M
Both Gemini 3 Pro and GPT-5.1 Codex mini are available on Zo Computer. Try them both to see which one works best for your use case.